GNU/Linux man pages
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GNU/Linux |
CentOS 4.8 |
i386 |
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true(1p) |
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true − return true value
true
The true utility shall return with exit code zero.
None.
None.
Not used.
None.
None.
Default.
Not used.
Not used.
None.
None.
Zero.
None.
The following sections are informative.
This utility is typically used in shell scripts, as shown in the EXAMPLES section. The special built-in utility : is sometimes more efficient than true.
This command is executed forever:
while true
do
command
done
The true utility has been retained in this volume of IEEE Std 1003.1-2001, even though the shell special built-in : provides similar functionality, because true is widely used in historical scripts and is less cryptic to novice script readers.
None.
false , Shell Commands
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html .
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true(1p) | |